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Finding the Fourth Proportional to 58,999.84, 81,413.70 and 36,335.20

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Solution

The fourth proportional to 58,999.84, 81,413.70 and 36,335.20 is: 50,138.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,999.84 : 81,413.70 = 36,335.20 : x
  2. Step 2: Convert to fraction form
    58,999.84/81,413.70 = 36,335.20/x
  3. Step 3: Cross multiply
    58,999.84x = 81,413.70 × 36,335.20
  4. Step 4: Simplify right side
    58,999.84x = 2,958,183,072.24
  5. Step 5: Solve for x
    x = 2,958,183,072.24/58,999.84
  6. Step 6: Final answer
    x = 50,138.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.